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为解决变电站间隔层数据快速与可靠传输的问题,分析了变电站自动化系统中数据的多种传输类型和传输模式,提出了对工业实时控制系统所采用的发布/订阅通信模型加以改进,融合了请求/应答的事务型服务、发布/订阅的数据型服务两种需求。研究了改进型发布/订阅的流控制模型和实现机制,将变电站数据分成一次性和周期性两类发布数据,阐述了数据发送与接收的有序化控制、有选择重发等方法和策略的实现,给出的仿真实验证明了该模型的可行性。
In order to solve the problem of fast and reliable transmission of data in substation compartment, various transmission types and transmission modes of data in substation automation system are analyzed. The proposed publish / subscribe communication model used in industrial real-time control system is improved, and the request / Response transaction service, publish / subscribe to the data type of service two needs. This paper studies the flow control model and implementation mechanism of improved publish / subscribe, divides substation data into two kinds of one-off and periodic data, expounds the methods of data sending and receiving, such as ordering control, selective retransmission and other methods The simulation experiment is given to prove the feasibility of the model.